Code Duplication    Length = 17-23 lines in 3 locations

doc/phpmetrics/js/d3.v3.js 3 locations

@@ 86-108 (lines=23) @@
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    }
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    return a;
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  };
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  d3.extent = function(array, f) {
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    var i = -1, n = array.length, a, b, c;
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    if (arguments.length === 1) {
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      while (++i < n) if ((b = array[i]) != null && b >= b) {
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        a = c = b;
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        break;
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      }
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      while (++i < n) if ((b = array[i]) != null) {
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        if (a > b) a = b;
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        if (c < b) c = b;
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      }
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    } else {
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      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
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        a = c = b;
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        break;
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      }
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      while (++i < n) if ((b = f.call(array, array[i], i)) != null) {
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        if (a > b) a = b;
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        if (c < b) c = b;
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      }
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    }
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    return [ a, c ];
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  };
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  function d3_number(x) {
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    return x === null ? NaN : +x;
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  }
@@ 69-85 (lines=17) @@
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    }
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    return a;
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  };
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  d3.max = function(array, f) {
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    var i = -1, n = array.length, a, b;
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    if (arguments.length === 1) {
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      while (++i < n) if ((b = array[i]) != null && b >= b) {
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        a = b;
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        break;
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      }
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      while (++i < n) if ((b = array[i]) != null && b > a) a = b;
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    } else {
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      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
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        a = b;
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        break;
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      }
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      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b > a) a = b;
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    }
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    return a;
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  };
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  d3.extent = function(array, f) {
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    var i = -1, n = array.length, a, b, c;
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    if (arguments.length === 1) {
@@ 52-68 (lines=17) @@
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  d3.descending = function(a, b) {
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    return b < a ? -1 : b > a ? 1 : b >= a ? 0 : NaN;
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  };
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  d3.min = function(array, f) {
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    var i = -1, n = array.length, a, b;
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    if (arguments.length === 1) {
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      while (++i < n) if ((b = array[i]) != null && b >= b) {
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        a = b;
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        break;
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      }
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      while (++i < n) if ((b = array[i]) != null && a > b) a = b;
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    } else {
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      while (++i < n) if ((b = f.call(array, array[i], i)) != null && b >= b) {
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        a = b;
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        break;
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      }
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      while (++i < n) if ((b = f.call(array, array[i], i)) != null && a > b) a = b;
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    }
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    return a;
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  };
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  d3.max = function(array, f) {
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    var i = -1, n = array.length, a, b;
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    if (arguments.length === 1) {